Subtract 21/70 from 18/2
1st number: 9 0/2, 2nd number: 21/70
18/2 - 21/70 is 87/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
18/2 = 18 × 35/2 × 35 = 630/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Subtract the two like fractions:
630/70 - 21/70 = 630 - 21/70 = 609/70 - After reducing the fraction, the answer is 87/10
- In mixed form: 87/10
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